Vaonis All-Sky Filter Bundle for Vespera

Dual Band Filter: 12nm H-alpha & O-III for Nebulae

This dual narrowband filter is your primary tool for capturing high-contrast images of emission, planetary, and dark nebulae. By passing only the light from Hydrogen-alpha (656.3nm) and Oxygen-III (500.7nm) in two 12nm bands, it darkens the sky background, from urban or natural environments. This reveals faint, intricate structures in targets like the Orion Nebula (M42) and Veil Nebula that are otherwise washed out.

While its primary function is enhancing nebulosity, the filter's selectivity also produces sharper, tighter stars when imaging globular clusters like the Hercules Cluster (M13). It is not recommended for broadband targets like galaxies, which emit light across the entire spectrum.

CLS Filter: Suppressing Urban Na & Hg Light Pollution

The City Light Suppression (CLS) filter is a broadband filter designed to combat the most common sources of urban skyglow. It specifically blocks the primary wavelengths emitted by sodium (Na) and mercury (Hg) vapor streetlights, along with natural atmospheric oxygen emissions, while transmitting the light from celestial objects. This increases the contrast between your target and the sky, making it an essential tool for imaging from suburban or city backyards.

Unlike the highly selective Dual Band filter, the CLS is effective on all types of deep-sky objects, including galaxies and star clusters. It provides a significant improvement on emission nebulae like the North America Nebula (NGC 7000) and Lagoon Nebula (M8), boosting their signal against a darker background.

Choosing the Right Filter: CLS vs. Dual Band

Selecting the correct filter depends on your target and observing location. The two deep-sky filters serve different, complementary purposes for your Vespera.

• Use the CLS Filter for: Broadband targets like galaxies and star clusters viewed from light-polluted areas. It's also a great general-purpose choice for improving contrast on all types of nebulae from the city.
• Use the Dual Band Filter for: Maximum contrast and detail on emission, planetary, and dark nebulae, regardless of your location. It isolates the H-alpha and O-III wavelengths found mainly in nebulae.

Solar Filter: Observing Sunspots in White-Light

Transform your Vespera into a daytime solar observatory with the included white-light filter. This glass filter safely reduces the Sun's intensity, allowing you to observe and photograph dark sunspots on the photosphere. Using the Singularity app's dedicated Solar Mode, your Vespera will guide you through setup and provide a live view of solar activity.

You can capture still photos of sunspot groups and, by collecting images over hours or days, assemble them into a time-lapse showing how the sunspots appear, change and disappear. This is a white-light filter only; it reveals the photosphere but will not show prominences or flares, which require a specialized H-alpha solar telescope. This filter is compatible with Vespera, Vespera II, Vespera III, Vespera Pro, and Vespera Pro II models.

Seamless Integration: Automatic Filter Recognition

The CLS and Dual Band filters are engineered for effortless use with the Vespera. Each filter's lens ring contains an electronic card that allows the Vespera to automatically detect which filter is installed. Vespera then adapts its observation and image processing parameters accordingly, ensuring optimized results without any manual configuration.

The filter sits in the optical arm, one at a time. To swap it, press the button to unclip the filter, remove it carefully, place the other filter carefully, then press the button to clip it in.